#include<stdio.h>
#include<string.h>

int main()
{
    FILE *fp = fopen("myfile","r");
    if(!fp)
    {
        printf("fopen error!\n");
    }

    char buf[1024];
    const char *msg = "hello bit!\n";
    while(1)
    {
        ssize_t s = fread(buf,1,strlen(msg),fp);
        if(s > 0)
        {
            buf[s] = 0;
            printf("%s",buf);
        }
        if(feof(fp))
        {
            break;
        }
    }
    fclose(fp);
    return 0;
}